Last week�s failed attempt on the lives of Israeli diplomats
in Jordan was apparently carried out on instructions from Teheran, sources close
to Jordan�s General Intelligence Department (GID) revealed on Monday.

The sources said the GID was investigating the possibility
that the explosives used in the attack had been smuggled into the kingdom by
Iranian diplomats.

The attack itself was apparently carried out by local
al-Qaida supporters who received money and explosives from Iran, the sources
said.

On Monday, Al-Arabiya reported that an Amman taxi driver was
arrested on suspicion of involvement in the bombing.

According to the sources, the GID believes that the attack
came in response to the killing of Iranian scientist Prof. Massoud Ali Muhammadi
in Teheran last week. Ali Muhammadi was killed by a remote-controlled bomb on a
motorcycle.

President Mahmoud Ahmadinejad accused Israel of being behind
the assassination, which he said had been carried out in �Zionist style.�

The sources in Amman pointed out that the attack on the
Israeli diplomatic convoy had been carried out in a way similar to the assault
on the slain Iranian professor.

�We can see Iran�s fingerprints on the roadside bombing,� the
sources said. �The investigation is continuing in various directions.�

Israel has been on high alert in recent weeks ahead of the
second anniversary of the assassination of Hizbullah terror mastermind Imad
Mughniyeh in Damascus.

A number of attempts by Hizbullah to avenge Mughniyeh�s
February 2008 killing have been thwarted, including a plot last year to bomb
Israel�s embassy in Baku, Azerbaijan, and the Israeli defense establishment is
concerned that Hizbullah will make an effort to strike an Israeli target ahead
of the anniversary.

Security officials are also considering the possibility that
the attack may have been carried out by al-Qaida or one of its affiliates, or a
Palestinian terrorist group.

Last year three Hamas activists were sentenced in Jordan to
five years in prison for conducting surveillance of the Israeli Embassy in
Amman.